You can put this solution on YOUR website! There are a lot of ways to think of slope.
The easiest I can think of is to think of slope as
In the slope/intercept form of a line, which is y = mx + b, the "m" is the slope.
Similarly, in the point/slope equation of a line, which is
you can see that "m" is again the slope.
Also, you can think of slope between two ordered pairs as being:
_______________
Slope can also be
OR you can think of the slopes of parallel lines, because those slopes are equal.
The slopes of perpendicular lines are negative reciprocals of one another.
Horizontal lines have a slope of 0
Vertical lines have an undefined slope.
See how many easy ways there are to think of slopes? If you need a more specific answer, I think you'll have to re-post.